KR20130130971A - Considering the construction phase of a high-rise concrete buildings emissions of carbon dioxide development - Google Patents
Considering the construction phase of a high-rise concrete buildings emissions of carbon dioxide development Download PDFInfo
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- KR20130130971A KR20130130971A KR1020120054665A KR20120054665A KR20130130971A KR 20130130971 A KR20130130971 A KR 20130130971A KR 1020120054665 A KR1020120054665 A KR 1020120054665A KR 20120054665 A KR20120054665 A KR 20120054665A KR 20130130971 A KR20130130971 A KR 20130130971A
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- 239000004567 concrete Substances 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 title description 2
- 239000001569 carbon dioxide Substances 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 238000005266 casting Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 11
- 238000011156 evaluation Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 5
- 239000000446 fuel Substances 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000032258 transport Effects 0.000 description 14
- 230000008859 change Effects 0.000 description 8
- 239000005431 greenhouse gas Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000011395 ready-mix concrete Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009333 weeding Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/08—Construction
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/26—Government or public services
- G06Q50/265—Personal security, identity or safety
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The total steps for evaluating the CO 2 emissions of concrete were divided into five phases: material phase, material transportation phase, manufacturing phase, ready concrete delivery phase, and casting phase. And then assessed the CO 2 emissions.
When evaluating the concrete CO 2 emissions in the pouring stage, the difference of energy consumption according to the pressure of the pump car was considered, and the average energy consumption of the pump car per 1 m 3 of concrete was calculated to evaluate the CO 2 emissions during the pouring stage.
In the present invention, the pump car mechanism and efficiency at the pouring stage were studied, and the relationship between fuel consumption was derived by using the pressure and engine power of the pump car, and the CO 2 emissions at the pouring stage were evaluated.
Description
The present invention relates to concrete, and is a method for evaluating CO 2 emissions generated from concrete, in particular, until all concrete is poured into a building, that is, all CO generated in the material production, material transportation, manufacturing, and construction stages of concrete. 2 Emission method.
In recent years, countries have made efforts to solve the climate change problem, but consensus has been forming in the international community that efforts at individual countries cannot solve the climate change problem and require global cooperation. As a result, the birth of the most widespread climate change convention (Post Kyoto Convention) of the international community has been foreseen, and greenhouse gas reductions have been implemented for five years (2008-2012) under the Kyoto Protocol adopted by the 1997 UN Climate Change Convention. The post-Kyoto system has emerged to address the problems of the weeding system, in which major greenhouse gas emitters have been excluded from the mandatory reduction countries.
However, as developed countries reduce GHG emissions, Korea's GHG emissions continue to increase, countering international trends in response to climate change.
In addition, 'green protectionism', which imposes trade sanctions, is emerging for countries that do not participate in climate change mitigation.
As the US EPA reports that energy and CO 2 emissions from buildings in the United States account for 70% of US energy use and 38% of CO 2 emissions, Effort is required. In particular, concrete, which is most widely used in the construction field, is an essential and most important material used to make buildings. Therefore, in order to reduce greenhouse gas emissions in the construction field, an accurate evaluation of concrete's CO 2 emissions must be preceded.
Accordingly, the present invention is to solve the problems as described above, as a method of evaluating the CO 2 emissions generated in the concrete, according to the production purpose of the concrete to determine the concrete's CO 2 emissions to determine the casting stage of the material The objective is to develop a method for estimating the CO 2 emissions from concrete during the five phases, material transportation, manufacturing, ready-mixing, casting, and pouring.
The present invention to achieve the above object; The total steps for evaluating the CO 2 emissions of concrete were divided into five phases: material phase, material transportation phase, manufacturing phase, ready concrete transportation phase, and casting phase. Each phase uses energy analysis through two analyzes by material and process. And then assessed the CO 2 emissions.
When evaluating the concrete CO 2 emissions in the pouring stage, the difference of energy consumption according to the pressure of the pump car was considered, and the average energy consumption of the pump car per 1 m 3 of concrete was calculated to evaluate the CO 2 emissions during the pouring stage.
In the present invention, the pump car mechanism and efficiency at the pouring stage were studied, and the relationship between fuel consumption was derived by using the pressure and engine power of the pump car, and the CO 2 emissions at the pouring stage were evaluated.
As described above, the present invention can calculate the CO 2 emissions generated from the production of the concrete to the pouring stage, and can reduce the CO 2 emissions of the concrete by using the equation of CO 2 emissions of the pouring stage through the pump car. . Furthermore, it is the invention that is the basis of the whole life evaluation program for buildings.
1 is a flow chart for evaluating concrete CO 2 emissions according to the present invention;
2 is a pump car used in the specification and representative of the pump car according to the present invention,
3 is a fuel consumption distribution according to the engine output of the Pump Car according to the present invention,
4 is an analysis of concrete CO 2 emission evaluation of 24MPa strength in the pouring step according to the present invention,
5 is a relationship between rpm and engine power of a Pump Car according to the present invention;
Figure 6 is a relationship of rpm and BSFC of the Pump Car according to the present invention,
7 is a relationship between the rpm and the fuel rate of the Pump Car according to the present invention,
8 is a relationship between rpm and Toque of the Pump Car according to the present invention,
Hereinafter, an embodiment according to the present invention will be described.
The total steps for evaluating the CO 2 emissions of concrete were divided into five phases: material phase, material transportation phase, manufacturing phase, ready concrete delivery phase, and casting phase. And then assessed the CO 2 emissions.
When evaluating the concrete CO 2 emissions in the pouring stage, the difference of energy consumption according to the pressure of the pump car was considered, and the average energy consumption of the pump car per 1 m 3 of concrete was calculated to evaluate the CO 2 emissions during the pouring stage.
In the present invention, the pump car mechanism and efficiency at the pouring stage were studied, and the relationship between fuel consumption was derived by using the pressure and engine power of the pump car, and the CO 2 emissions at the pouring stage were evaluated.
In addition, the invention is a material production step, material transport step, manufacturing step, ready-mixed concrete transport step, pouring step evaluation is performed in a total of five steps, and in the pouring step to calculate the amount of CO 2 using the fuel consumption of each pressure of the Pump Car It is characterized by. The evaluation proceeds with the same flow as in FIG. 1.
Phase 1 material production is calculated by using Equation 1 by applying the raw unit of the main material of the concrete to the actual quantity production volume.
Here, CO 2M is the CO 2 emissions of the material, M (i) is the quantity unit of material M is the unit of CO 2 by material.
In the second phase of material transportation, the oil quantity of transportation equipment is investigated and analyzed by applying the actual distance of the vehicle loaded with materials. Equation 2 is used to calculate the CO 2 emissions generated by each material in the transportation stage by using the CO 2 emission unit of each vehicle and the distance each material transports to the ready-mixed concrete manufacturing plant.
Here, CO 2T is the CO 2 emissions of the transport phase, M (i) is the transport material (ton), L t is the transport equipment load by material, d is the transport distance.
In addition, CO 2 emissions by transport equipment are shown in Table 1.
In the 3rd stage of manufacturing, the ready-mixed concrete manufacturer evaluates the CO 2 generated from concrete production.In the manufacturing stage, the CO 2 emission evaluation evaluates the power and oil consumption used by the firm in each process and uses [Equation] 3. .
Where CO 2F is the CO 2 emissions from the production of unit concrete, E y is the annual energy consumption, R is the annual ready-mixed concrete production, E (e) annual electricity consumption, and E is the CO 2 emission unit of each energy source.
Stage 4 Ready-mixed concrete transportation stage investigates and analyzes the oil volume of transportation equipment by real distance application. Using a daily, monthly mileage condition table in the ready-mixed concrete transport vehicles selected for the vehicle calculates the average fuel consumption of the ready-mixed concrete transportation vehicle will be calculated using the CO 2 emissions in the ready-mixed concrete transportation step the formula - 4.
Here, CO 2R is the amount of CO 2 generated in the ready-mixed vehicle, D is the moving distance of the ready-mixed vehicle, and F avr is the average fuel economy of the ready-mixed vehicle.
Step 5 In the casting step, the CO 2 generated when 1m 3 of concrete is poured by Pump Car is evaluated. The evaluation includes the change of the energy consumption according to the change of engine output and pressure of the pump car. To estimate the CO 2 emissions during the pouring phase, the pump car pressure and engine power must first be estimated. Calculate using
Where N is engine power kW, P is Pump Car pressure (bar), Q is Pump Car discharge per hour m 3 / h, h is the height of the building, and D is the diameter. The energy efficiency of the pump car is shown in Table 2.
Nm
g.kW-hr
L /
Energy efficiency for each output of the pump car [Table 2] and Figure 3 to derive [Equation 7].
Use Equation 7 to derive
Here, Y, P f is the fuel consumption per hour (L / hr), x is the engine output kW, CO 2p is the pump car's CO 2 emissions, Q is the pump car's concrete hourly discharge m 3 / hr, F c is One layer of concrete pouring m 3 .
The results of the present invention are as follows.
Based on the proportion of normal strength concrete strength of 24MPa most frequently used during building construction and calculate the CO 2 emissions per 1m 3. The blending ratio used in the experiment is shown in Table 3.
(%)
(%)
The results of evaluating CO 2 emissions using Equation 1 are shown in Table 4.
kg-CO 2 / m
%
In the material transportation stage, the CO 2 emissions generated by each material transportation stage are calculated using Equation 2 using the distance that each material is transported to the ready-mixed concrete plant. The results are shown in Table 5.
kg-CO 2 / m
%
In the manufacturing stage it was calculated by using the areas of energy use and the formula] 3 of the production equipment using the CO 2 emissions in the manufacture of concrete 1m 3 each process. The results are shown in Table 6.
kg-CO 2 / m
In the ready concrete transportation stage, the evaluation was conducted in a similar manner to the material transportation stage, and 50 km, which can be reached within 1 hour and 30 minutes on average from the ready-mix concrete manufacturing company, was evaluated. In addition, the average fuel economy of the ready-mixed vehicle was evaluated using the monthly fuel economy condition table of the ready-mixed vehicle, the results are shown in Table 7.
(Concrete mixer truck)
The casting step calculates the CO 2 emissions generated at the time of pouring the concrete 1m 3 in each layer using the formula; 8. The results are shown in Fig.
Claims (3)
When evaluating the CO 2 emission of the concrete, the concrete CO 2 emissions evaluation method characterized in that the evaluation, including the CO 2 emission of the transport process of the concrete ready-mixed concrete vehicles.
In the case of evaluating the concrete CO 2 emissions, the concrete CO 2 evaluation method comprising the CO 2 emissions generated when the concrete is placed on the building using a pump car at the construction site.
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|---|---|---|---|
| KR1020120054665A KR20130130971A (en) | 2012-05-23 | 2012-05-23 | Considering the construction phase of a high-rise concrete buildings emissions of carbon dioxide development |
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| KR1020120054665A KR20130130971A (en) | 2012-05-23 | 2012-05-23 | Considering the construction phase of a high-rise concrete buildings emissions of carbon dioxide development |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116258389A (en) * | 2022-12-13 | 2023-06-13 | 中铁隧道局集团有限公司 | Carbon emission evaluation method and system in reinforced concrete segment production stage |
| CN116720652A (en) * | 2023-05-25 | 2023-09-08 | 邯郸市交通运输局干线公路建设管理中心 | Estimation method for VOCs emission in asphalt pavement construction period |
| CN116969723A (en) * | 2023-07-27 | 2023-10-31 | 同济大学 | Biochar foam concrete with efficient carbon fixing performance |
-
2012
- 2012-05-23 KR KR1020120054665A patent/KR20130130971A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116258389A (en) * | 2022-12-13 | 2023-06-13 | 中铁隧道局集团有限公司 | Carbon emission evaluation method and system in reinforced concrete segment production stage |
| CN116258389B (en) * | 2022-12-13 | 2024-02-23 | 中铁隧道局集团有限公司 | Carbon emission evaluation method and system in reinforced concrete segment production stage |
| CN116720652A (en) * | 2023-05-25 | 2023-09-08 | 邯郸市交通运输局干线公路建设管理中心 | Estimation method for VOCs emission in asphalt pavement construction period |
| CN116720652B (en) * | 2023-05-25 | 2024-05-24 | 邯郸市交通运输局干线公路建设管理中心 | Estimation method for VOCs emission in asphalt pavement construction period |
| CN116969723A (en) * | 2023-07-27 | 2023-10-31 | 同济大学 | Biochar foam concrete with efficient carbon fixing performance |
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